Due to the Tohoku-Chihou-Taiheiyou-Oki Earthquake which occurred on March 
11, 2011, TEPCO's facilities including our nuclear power stations have 
been severely damaged. We deeply apologize for the anxiety and 
inconvenience caused.
With regard to the accident at Fukushima Daiichi Nuclear Power Station, on 
April 17, 2011, we have compiled the roadmap towards restoration from the 
accident and on July 19 we accomplished the Step1 target "Radiation dose 
is in steady decline". Then on December 16 we confirmed the accomplishment 
of the Step 2 target "Release of radioactive materials is under control 
and radiation doses are being significantly held down".
In addition, on December 21, 2011, we have compiled the "Mid-to-long-Term 
Roadmap toward the Decommissioning of Fukushima Daiichi Nuclear Power 
Units 1-4, TEPCO".
In addition to the maintenance of the plant's stable condition, we will 
implement Mid-to-Long Term countermeasures towards the decommissioning of 
Fukushima Daiichi Nuclear Power Units 1-4 to enable evacuees to return to 
their homes as soon as possible and reduce the anxiety of the people in 
Fukushima and the whole nation as soon as possible.
 
Below is the status of TEPCO's major facilities.
 
* The updates are underlined. 
 

[Nuclear Power Station]  
 
· Fukushima Daiichi Nuclear Power Station: Unit 1 to 3: shut down due to 
  the earthquake: 
  (Units 1 to 4: shutdown due to the earthquake) 
 
 - On January 25 2012, we conducted sampling of the gas of the PCV gas 
   management system of Unit 2. As a result of the analysis, we confirmed 
   that at the entrance of the system Xenon 135 was below detection limit 
   (1.1 x 10-1Bq/cm3), and below the re-criticality criterion which is 
   1Bq/cm3. 
 
 - For the reliability enhancement of water injection into the reactor, 
   the water discharge line of the reactor water injection pump on the 
   hill is planned to be changed from pressure hose to polyethylene pipe. 
   Therefore, there is the necessity of the temporary stopping of water 
   injection from the reactor water injection pump for it. At 11:50 am 
   January 26, the water injection to the reactor of Unit 3 from the feed 
   water injection system was switched from the reactor water injection 
   pump to the reactor water injection pump in the turbine building. 
 
 - At 1:31 pm on January 26, we started injection of hydrazine to the 
   spent fuel pool of Unit 4 through the circulating cooling system. 

· Fukushima Daini Nuclear Power Station:
  (Units 1 to 4: shutdown due to the earthquake) 

 - Due to the remodeling work of the power panel of Unit 3, at 10:30 am on  
   January 26, we stopped residual heat removal system (A), and at 10:46 
   am on the same day, we started residual heat removal system (B). In 
   addition, we stopped cooling the spent fuel pool of Unit 3 from 11:34 
   am to 1:54 pm, and we stopped the spent fuel pool coolant system from 
   11:41 am to 2:00 pm on the same day. (The temperature of the spent fuel 
   pool when stopping: 28.1°C, when restarting: 28.3°C) 

· Kashiwazaki Kariwa Nuclear Power Station: Units 6: under normal operation
  (Units 1 to 5 and 7: outage due to regular inspections)
  

[Thermal Power Station]  
· Power supply has returned to normal and facilities damaged by the 
  earthquake are now being handled in a timely manner.
  

[Hydro Power Station]  
· Power supply has returned to normal and facilities damaged by the 
  earthquake are now being handled in a timely manner.
  

[Impacts on Transmission Facilities]  
· Power supply has returned to normal and facilities damaged by the 
  earthquake are now being handled in a timely manner.
 

[Impacts on Power Supply and Demand Balance]  
This winter, there are some minus factors such as the regular inspection 
of Unit 5 at Kashiwazaki-Kariwa Nuclear Power Station*. On the other hand, 
there are several plus factors such as the recovery of the common thermal 
power stations which suffered the earthquake. As a result, we expect to 
secure 54.6 GW (at the end of January), 53.7 GW (at the end of February) 
supply power. 
Compared to the maximum demand in the last winter, which is 51.5 GW, we 
will have 2.2 - 3.1 GW generation reserve margin.
 
We expect to maintain stable power supply this winter, however, as there 
remains possibilities of unplanned shutdowns at our power stations and 
growth in the demand according to the rapid change in the temperature, we 
would like to ask your reasonable effort to save electricity.
 
We will continue to make our efforts to maintain stable operation and 
maintenance of the power facilities in order to "prevent in principle" the 
planned blackouts and secure power supply.
 
* Correction of Description in [Impacts on Power Supply and Demand Balance]
We described,"there will be some minus factors such as the regular 
inspection of Unit 5 at Kashiwazaki-Kariwa Nuclear Power Station" in the 
previous press release. However, because Unit 5 of Kashiwazaki-Kariwa 
Nuclear Power Station has already conducted a regular inspection since 
January 25, we revise the previous sentence to "there are some minus 
factors such as the regular inspection of Unit 5 at Kashiwazaki-Kariwa 
Nuclear Power Station". We would like to apologize for the correction 
(February 8, 2012). 

 
Appendix: Past Progress (As of 3:00 pm, January 26, 2012) (PDF 363KB) 
Appendix: Past Progress (From March 11, 2011 to July 31, 2011) (PDF 225KB) 
 
* Revised past progress